Can tight socks and a pricier seat keep your leg veins safe at 30,000 feet?

NCT ID NCT07808931

What the study statuses mean

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Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Sep 09, 2026 · Last updated Sep 10, 2026 · Updated 1 time

Summary

Researchers are studying travelers who booked long flights to Bogota and had aesthetic surgery planned after arrival. Within economy and premium cabins, participants are assigned at random to wear knee-high compression stockings or none. Ultrasound scans of the leg veins are taken before the flight and again after landing, at 24 hours, and at 48 hours. The goal is to see whether cabin class and stockings together affect how much the popliteal vein widens.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Knee-high graduated compression stockings
What this could lead to
If stockings or a roomier cabin keep leg veins from widening, that could shape simple advice for people flying long distances after cosmetic surgery.
What could go wrong
Vein widening on an ultrasound is a proxy for clot risk, not a clot itself, so a change here may not translate into fewer real problems. The study is small and only follows travelers for 48 hours.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 200 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jan 2024

Expected to finish

Dec 2026

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 65 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Age 18 to 65 years. * Commercial itinerary to Bogota with at least 4 hours of total airborne time. * Prebooked premium business/first-class or economy-class cabin documented before randomization. * No medical requirement for or contraindication to graduated compression stockings. * Ability to complete standardized ultrasound before flight and through 48 hours after arrival before surgery. * Written informed consent. Exclusion Criteria: * Current deep venous thrombosis, therapeutic anticoagulation, or severe peripheral arterial disease. * Pregnancy. * Lower-extremity skin, neurologic, or anatomic condition preventing safe stocking use or ultrasound. * Cabin upgrade or downgrade after randomization that changes the prespecified stratum. * Surgery or major intravenous fluid therapy before the 48-hour examination. * Inability to follow the randomized stocking assignment.

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As listed by the trial registrant

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How to take part

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Contacts and locations

Locations

  • Clinica INO

    RECRUITING

    Bogotá, Colombia

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